Applications FFT frequency spectrum analyzer Stereo, mono, mid-side spectrum analyzer 7.1, 5.1 surround sound spectrum analyzer Stereo correlation meter EBU R128, K-system meter RMS, true peak level, and clipping detector SPAN is a free real-time “fast Fourier transform” (FFT) audio frequency spectrum analyzer AAX, AudioUnit, and VST plugin for professional audio and music production applications.
![Voxengo SPAN - Free Spectrum Analyzer Plugin VST, AU, AAX](https://cdn-ak-scissors.b.st-hatena.com/image/square/940a05cbe048685c598d3a661742a2de23b7ba73/height=288;version=1;width=512/https%3A%2F%2Fwww.voxengo.com%2Fcdn%2Fimg%2F25%2F25jfq1s2y.jpg)